public class Example5_1 {
  public static void main (String args[]){
    Student zhang = new Student();
    zhang.age=17;
    zhang.number=100101;
    zhang.showPeopleMess();
    zhang.tellNumber();
    int x=9,y=29;
    System.out.print("会做加法：");
    int result=zhang.add(x,y);
    System.out.printf("%d+%d=%d\n",x,y,result);
    UniverStudent geng = new UniverStudent();
    geng.age=21;
    geng.number=6609;
    geng.showPeopleMess();
    geng.tellNumber();
    System.out.print("会做加法");
    result=geng.add(x,y);
    System.out.printf("%d+%d=%d\t",x,y,result);
    System.out.print("会做乘法:");
    result=geng.multi(x,y);
    System.out.printf("%d*%d=%d\n",x,y,result);
  }
}
